MrGuga,
Everything seems to be right, except for the entry for the X450-24t, a very old switch, that shows a minimum required EXOS version of 12.5.1 that should probably read 11.5.1.
Most of the equipment with maximum EXOS version 12.4 is old, obsolete modules and switches that have reached their End of Life.
All switches that have recently reached End of Sale (X150/X250e/X350/X450e/X450a/X650) support EXOS versions up to v15.3 due to HW limitations.
Only the currently shipping switches (X430/X440/X46/X670/X770/BD8K/BDX8) upport v15.4 and higher.
Thanks for spotting the error. I'll pass it to the right people to have it corrected.