SAPP 5.0 Is out, by now every1 should got it by auto-update.
There are 1 main change in the engine, that hooking is now totally rewritten, code is more clear and hooking is faster. This means Sapp is some step closer to port to HPC. Sapp also got 2 new feature: arguments for custom commands and The no-lead mod. =)
Arguments for custom commands: Between the command name and the command, you can put arguments starting with the '#' character. Example: You add to the commands.txt the max #n 'sv_maxplayers #n' line and you execute the max 4 command, sapp will execute the sv_maxplayers 4 command. Or spawnw #n #weap 'spawn weap "weapons#weap#weap" #n; wadd #n' and you execute the spawnw 4 "sniper rifle" it will execute the spawn weap "weapons\sniper rifle\sniper rifle" 4 and the wadd 4 command, and gives a sniper for player 4. Here I had to note that lately kids using sapp to cheat on scrims. There is a feature to fix this already: