According to dpreview.com and based on THIS page, subscriptions will change and some people might like to prepare and/or take fairly immediate action.
Get a first impression with this:
Yes, I found about this from Tim Grey’s daily “Ask Tim Grey”. When I went to my account on the Adobe site I could not see how to convert my subscription from a paid-monthly to paid annual plan. The latter locks in current pricing for a year (for the Photographers’ bundle of Lr and Ps). So I activated the “Chat” function on the Adobe website. After jumping through a couple of hoops I was quickly connected with a real person who completed the conversion with me. I must say it was smooth and fast - no complaints. So having now paid for a year, the current price is locked-in; however, if they raise the price a year from now, next year’s subscription will cost the new price.