Probably until mids february, that htc releases an android 2.1 device and can port the rom for their other devices more "easily". still there is not much tattoo development yet in the community and cyanogen is centered in the first g1 phones.
BeWaRe oF ThE DoG
Samsung Galaxy Nexus / Stock ROM ICS 4.0.6 (WWE)
Archos G9 101 Turbo 512Mb / Stock ROM ICS 4.0.6 (WWE)
Motorola Milestone, HTC Tattoo, HTC Blackstone, HTC Hermes, HTC Universal