In the referenced message, Sean M. Doran said:
Hello, long time no see -
RIPE is now allocating subnets of 80/8 to end users.
In order to avoid the ugliness of various people announcing 80/8
without guaranateeing transit to all the subnets, if you are filtering
subnets of this /8, please relax your filters to allow /20s and shorter,On behalf of random Europeans,
Sean. (yeah, ok, this is at least partially work-related-stuff...)
According to
http://www.ripe.net/ripe/meetings/archive/ripe-39/presentations/rsreport/sld003.html
They are also allocating out of 81/8, so if you want to avoid making changes
to filters twice, may want to add that as well.