Recently they changed settlement rules for Tier 2 migrants, which included adding an income threshold. But the change won't be activated until April 2016 - so most people who are already in that pipeline will be able to apply under the existing rules. They might do the same here - they could introduce the changes for fiance/spouse visas and for people switching categories in-country on 1 July 2012, but not introduce any changes to ILR requirements until 1 July 2014.
There are usually transitional arrangements when rules are changed - I think I'm right in saying that the government had their hand slapped by the courts a few years ago for NOT including transitional arrangements when making one of their changes.
This is just a guess. But everything I've read since about October last year which comes from a credible source suggests that everyone who's already here probably won't be affected by the changes.
Lol, well, that's what my husband and I are hoping for-an arrangement that the timing right for us and everyone who is here before the changes are announced and implemented.
I've read the UKBA's Family Migration Consultation; in it they say they haven't decided how they are going to work all of that but in other places in the Consultation they have a flow chart indicating people would have to extend their probationary visas via FLR (oh joy, more fees) to meet a full five years. Sooooo...
Having been through a few hurricanes, tornadoes, floods, raising teen-agers, and a really nasty divorce, my motto has become "Prepare for the worst, hope for the best, and try to have some fun in the meantime"