Confusion Around Facebook Fan Pages & FBML
After digging around, we have some good news to share - from what i can gather, Facebook will still be supporting FBML for custom fan pages. anyway, explained clearly in the blog below
How Long Will Static FBML be Supported by Facebook? | HyperArts
disclaimer: obviously, this is their view, authoritative though it seems. Make sure you do your own due diligence as well
cheers
TJ