In reply to Dave Richards:
We were there wc 29 June so may be a bit out of date. I have been there 4-5 times over last 6 years and temperatures in Ailefroide were highest I can recall for the whole week.
Mainly rock climbing but we attempted the Roche Faurio from Ecrins hut. Left Ecrins hut at 4.15 and it did not feel at all cold. Conditions were fine till the sun came up out when the snow very rapidly turned to slush. Lots of avalanches visible and we heard one (or maybe serac fall) coming from the Barre des Ecrins side as we were climbing.
We turned back before summit; it was first time on a glacier for the guys I was with and I was worried about crevasse/avalanche risk. Quite a few teams on the Barre also turned back early and it looked like they were taking great care (belaying across) on a couple of the crevasses half way up.
So, if these conditions have continued I think snow cover on the glaciers will be poor, making crevasses more dangerous. Start as early as you can!
Have a good holiday.