Not very new news, but thought I'd highlight it.

Renedra are about to release a plastic modular tower at Salute with a castle hot on its heels.

http://www.renedra.co.uk/index.php

It has been pointed out it seems to be a bit of a mix of architectures, and has sprues to add more fantasy type detailing to it if you wish gargoyles, crennelations etc..

Enjoy..

The tower is based on the one seen in the background on the cover of the Frostgrave rulebook.

But would work pretty well for a Mordor outpost methinks...

and released at the same time as the reworked Tabletop Workshop castle now from Warlord..