Priority Club is set to release their new award structure on January 18, 2013. You can book using old award levels, if the price of the free night have gone up, until march 18, 2013, by calling Priority Club Rewards service center.

Priority Club (InterContinental Hotels Group) has, however, refused to release a list of properties with their current and new award point levels.
We have compiled a list of around 4200 Priority Club properties and their award requirement as of January 11, 2013. InterContinental Hotels Group should have approximately 4500 hotels on its hotel portfolio. Some of these don’t allow any awards i.e. IHG Military Hotels. This list is likely missing around 3% to 5% of the current active hotel portfolio, but includes all InterContinental branded IHG hotels.
If you find a hotel that is missing from the list, you can leave a message below or send me an email. We can then include them in future updates.
We are planning to release a new list once the award category change has occurred and later a list of properties that have moved up/down in number of points required for a free night.
This list has been compiled from publicly available sources, but is copyrighted by LoyaltyLobby.
Conclusion
You can use this PDF to check against new award point requirements on January 18, 2013. If you are making a booking for a hotel that requires more points, you should call Priority Club and inform them about the lower point requirement prior to January 18. According to their press release, they are honoring the old point levels by request until March 18, 2013.