I too have been told 10 days or so but I don't think CML know themselves yet. Some spare parts have arrived at least but certain bits still seem to be in very short supply not only in the UK but also the US.
In fact if you check the big US stockists like A Main, Tower, LA parts house, etc even they don't have B5M kits, some seem to have a new batch of B5r as these were gone until recently but lots of parts are very scarce in the US such as ball ends, the C/D inserts for the alloy blocks, most of the alloy parts are scarce and Ti turnbuckles are hard to track down.
I guess for AE it's a big sales success and a big headache too trying to cope with demand