Adding info for anyone planning to ride - only the more off-beat destinations.
This is based on my ride from 3rd to 14th August in the circuit.
Sach pass top - Killar :: Primarily broken roads but fun. Rain might play havoc.
Darcha - Shinku La :: 90% is black-top.
Shinku La - Kurgiakh :: The downhill has the BRO doing its thing at some places. Mostly a mix of gravel and mud. Beyond the Dhaba - along the gompo ronjon section its a mix of little water crossings and dirt tracks. Just before the gompo ronjon camping grounds - the water crossings in evening become a bit challenging.
Kurgiakh - Purne :: Decent dirt tracks/stony paths.
Purne - Padum :: The initial climb is dirt track and one sandy section which requires gunning the throttle

Rest is ok. One just needs to stay on the right side of the river below. Sign boards aren't expressly available, but google offline maps work well. If you are in a car, expect a bit of delays due to BRO blasting. The last 20km is a beautiful black top.
Padum - Lingshed - Lamayuru :: After initial 15/20km of beautiful blacktop you will be dealing with a single lane stony/gravelly section blasted out of the mountains. While it is dodgy - one can just be grateful to the BRO bravehearts who built this.
Post crossing the bridge - things get better. The stony path is mostly replaced by a gravelly/mud section all the way through the three major passes.
Note: Your photo gear won't do justice to what you experiences there

The last 20 odd kms are again black tops.
Key La :: (Yes its not kela pass. Its Key La Pass. We have made the amends on google) Now this one is fairly challenging if you are not having a moderately powerful bike with good traction. Our xpulses struggled a bit at some sections. The downhill was a nightmare with loose mud/sand and stones. A big rock also blocked the downhill till Key La Tso. Car wallahs might want to check.
The road along the river till tangste is beautiful mix of gravel/dirt tracks and black top at the end.
Chushul - Kak sangla - Hor La - Mahe Bridge:: Mostly black tops. The initial shortcuts should be taken easily. Infact, take every shortcut you get for added fun! The last gentle downhill is red gravel dirt track fun.
Note: Mahe - Loma -Nyoma - Hanle is passe. There are two alternatives.
Alternative 1: Take the bridge just before nyoma fauji settlement, take a left from there and follow the dirt track. Your objective is to stay close to Indus river. Eventually, with some villager directions and bit of navigation you will end up at Rhongo village and then take the road to Hanle.
Alternative 2: Ryul Tso - Chilling Tso section. Now this is serious fun! We took it on our return from Hanle.
Hanle till Ryul Tso is a bit of BRO fun, dirt tracks, loose sand and teeny weeny bit of slush. Totally worth the view.
Ryul Tso - Chilling Tso - get off the dirt track and if your vehicle allows it - climb the hill to see both the lakes together (we were able to)
There is a detour you can take to Sir Sir La too (its fun)
Chilling Tso had a freak water crossing for us as it rained heavily. Otherwise, the road from Chilling Tso till Nyoma settlement bridge (referred in alternative 1) is a mix of gravel, sand, slush and lots of Kiangs, rocky water crossings et al. Should be a cakewalk in the right weather and tires.
Hanle - Umling La
Alternative 1: The well known Nurburla section. Initially beautiful dirt tracks and upto nurburla top. Instead of going towards umlingla preferably first go to nurburla pass (take a right when you see the black top road) Its a beautiful place. The rest of the road to umling la is pleasant. All you need is the right hardware. Any Fi vehicle will make it. One Carburetted xpulse in our group struggled big time. So do take that into consideration.
Alternative 2:
Photi La is a mix of black tops/dirt tracks and mud and bedded bajri (proper tyre slipper) I would personally advise taking this road only while coming back from umling la as climbing up for a 2 wheeler over the bedded bajri can be challenging. BRO is at work there so get to it ASAP. In a few months it will be a boring pristine black top.
Umling la - Demchok:: Simple black top. We just flipped the bird to the chinese there. Will not talk about other obscene gestures.
Mahe - Tso Moriri : Was a pleasure in 2014. Is a pleasure now in the right kind of bike. Dirt road paradise. We hit 80 in some sections.
Tso Moriri - Tso Kar :: Dirt road fun mostly. You actually get a choice of taking entirely different routes. A mud road and a gravel track. Take your pick.
Tso Kar - Debring :: All good.
Hope this helps.