It's really hard to tell whether Nolan will do it or not.
I thought initially that Bruce using the cane was because of his years of crimefighting and over 8 years it took it's toll on his body. That he was still fighing crime even after TDK....but it didn't make sense somewhat as he seemed to go into hiding.
My thought.
Opening sequence is Bane on the plane. Then it goes to Harvey Dent's funeral at Wayne Manor where we see Bruce in the dark on the roof walking away...with no cane.
Bane makes his first appearance. Injures Gordon and Gordon asks for Batman to come back. Bruce of course is at his bedside with the ski mask on from Begins, mirroring the Begins scene, only this time Bruce is facing him.
Bruce dons the batsuit again and confronts Bane, but is outmatched and Bane breaks or severly injures Bruce and then Bruce ends up at the well. I think overall he is dunked in the Lazarus pit and is healed, but re-cooperating for sometime...but not for 8 years.
In that time John Blake and Co try to take a stand against Bane and co.
Bruce healed but using a cane, comes back to Gotham as you see Bruce in the reflection of the plate cover with the beard, cane and ragged clothes, with the manor furniture covered, just like in Begins.
As Bruce gets back to full health, he meets both Miranda and Selina, (which you see in the trailer as Bruce is cleaned up but using the cane) who come into his life and it goes from there....and one of the scenes nearing the end, mirroring Joker and the truck, Bruce, Catwoman, and Gordon team up to take on Bane and Co...as one of the clips shows the Batwing and the truck that Gordon highjacks.
I do think that the Lazarus Pit will play an important key in fixing Bruce, much like it probably did in healing Ra's and more importantly Bane, connecting them all...but with Nolan being a realist, it won't fix him overnight and as mentioned, it will take a couple weeks at most...as we see in the first trailer, he is working out in the cell getting his body into shape again....so that had to be after getting broken and being dunked in the pit.
I feel there will be a lot of full circle and mirroring moments in this film.