Replace Mikrotik RouterBoard

Hi there.

For a long time, I've been working with Mikrotik and It never occurred to me that RB435G would be out of life. Currently, I'm moving to RBM33G with R11E-5HnD but I haven't got a clear answer from Mikrotik how long it will support.
Maybe anyone knows what is life period for Mikrotik devices?
And one more essential question which company with motherboard and minipci-e wifi modules can be possessed instead of mikrotik? What companies can you recommend me to research and put their devices to the test? I need at least 2 wifi modules inside that operate on 5Ghz and work on OpenWRT.