Is upgrade from ML 332 to 332.5 worth it?

My friend just sold his 333 & got the 383 integrated. He says the 334, 5 & 6 are about to be replaced by new models.
If Madrigal does what they did last time (new circuit board upgrade for 2K & you still can't (change-upgrade) the heat sinks), I'd wait for the new models.
I have Pass, Rowland, Aragon & Sherbourn amps. I don't agree with Madrigal's philosophy of planned obsolescence. -Just my opinion...

i think they will upgrade 33 and 300 series will be 400 serie like mono blocks

Thanks for all the responses, yes I wonder about the new model because it been awhile 4 yrs I think regarding the 3 series 4,5,6 been out there. Any one know Madrigal going to release the new series. Thanks again