True, ever since AP-wg agreed that routing considerations, such as (de)aggregation, would be better reflected in a routing document than in an address policy one. Work has been headed by Rob Evans and Sander steffann with help. see http://www.ripe.net/ripe/wg/routing/r59-minutes.html, the minutes for RIPE 59. Look at the last item in the minutes
Sorry for the slow reply. An update to the IPv6 route filtering recommendations document has been on my todo list since Lisbon (and I've been chased about it a few times by some people), but I've had little chance to devote much time to it. I do aim to get it done well before Prague. However, I've been quite fond of keeping the document short and focused, so whilst I'd be happy for an IPv6 BCP to reference it, I'd need to be persuaded to add much more to it. Cheers, Rob