In reply to Phil Tucker:
I wouldn't bother if you already have the Rockfax as both are fairly similar. A lot of the additional routes are at cragging areas like Gausta and Kroken rather than new areas or multipitch. From the descriptions it's fairly obvious that some of these were lifted from the UKC logbook. There's one new outlying area from memory but it doesn't look somewhere that's likely to see many visitors.
I was a bit disappointed that there's been virtually no grade adjustment from the first guidebook despite '+' grades being introduced.