I too suspect R&M are moving away from Birdy. The UK dealer network is very quiet with few Birdys left in stock.
Unfortunately I also think the chance of an e-Birdy has been and gone. They sold one for a couple of years but suspect they were too early to market. I doubt they will try again which is a shame because the frame design gives plenty of places to hide a battery.
I’m selling my 11sp Birdy as working from home mostly these days. On UK eBay if anyone is interested!