My Wife is living with me as Tier 1 dependent since 04/2009 in UK. When i get an ILR and herself as well, Can she apply for British passport immediately because she already spent at least 3 years as dependent. I would suggest that you read the eligibility criteria available on the ukba website "htt...

There appear to be more and more applications being approved over the week. So far the latest biometric date for which I've seen approvals is March 23rd.

You can take a look at "Tier 1 (General) extension application processing timelines" for more and also the trackitt.com tracker as well.