When the MK5 started production in 04, it was announced that the 200ps GTI and the 275ps R32 would follow in 2005. But that would've made it quicker than the S3, and that's just a big nono in the VAG stable. Shame, 275 would be about right.
VW have released info to their dealers that an R32/R36 Golf will not be made available in the UK (due to the tree hugging hippies that want to save the whales), instead the top model will share the same engine as the next release of the S3, possibly slightly detuned. Sounds like an ED30 to me then..