If the MBP wasn't getting a completely new industrial design, then sure - buy now. But in a few months you'll have the chance to get an M1X/M2 chip with the fresh design, possibly better screen, more ports and 14" size in the 13" chassis for likely the same money as the 13" MBP today.
We're 5 months in since the M1 13" MBP release (Nov 10). I'd wait if I could, and I can and am waiting. Plan to order the 14" M(?) MPB the day they open for purchase.