According to TVGuide UK, new episodes of Be Cool, Scooby-Doo will begin to air on Wednesday, November 1 at 5:00pm on Boomerang UK, starting with "American Goth." New episodes will continue to air every weekday at 5:00pm. However, these episodes are all available online at the moment, so thus the episodes are not technically "new" other than the fact that they have not aired yet in the UK.
I generally try to keep speculation out of news posts, as they are supposed to (hopefully!) be informative, but I found this quite interesting so I suppose I'll mention it here. Zap2it lists the missing episode(s) "Pizza O'Possum's" and "The Curse of Half-Beard's Booty" for November 13, though generally they haven't been reliable with any dates (in fact, all of the their season 2 airdates are incorrect). In this case however, the November 13 date they list would actually be perfectly aligned with the way the UK is airing them, if they choose to air the episode. In example, "American Goth," episode 16 is airing on Wednesday, November 1, so "Omelettes Are Forever" and "Ghost in the Mystery Machine," episodes 17 and 18 of season 2 are airing Thursday, November 2, and Friday, November 3, respectively. The next week, presumably, "Naughty or Ice" - "World of Witchcraft" (episodes 19-23) would air November 6-10. The only episode left to air would be the missing episode, which, if the new episodes are not airing weekends, would sync up with the November 13 date Zap2it lists. Nothing concrete or confirmed there, but I thought it was quite an intriguing (and hopefully true!) coincidence.
Here is the current schedule for the new episodes:
November 1 - American Goth
November 2 - Omelettes Are Forever
November 3 - Ghost in the Mystery Machine
November 6 - Naughty or Ice
November 7 - Night of the Upsetting Shorts
November 8 - Junkyard Dogs
November 9 - Protein Titans 2
November 10 - World of Witchcraft
(Check back often for new titles!)