Technical support inquiry about some out of stock FPGA

Hi. Please find my response below:

1. Does the company have any distribution channels that can stock these FPGA parts?

You may reach out to our distributor for the FPGA stock.

https://marketplace.intel.com/s/pmp-partner-program/a723b0000008PICAA2/distributor?language=en_US

2. Will these codes still be produced and supported in the near future (until 2035)?

These part are still active now. But however for new device, it is recommended to use latest device.

3. Please recommend me equivalent alternative FPGA parts if possible.

For cyclone V, you may use Cyclone 10 LP, Cyclone 10 GX

For MAX V, you may use MAX10