Q: Does having a lot of Research Labs lab out the game?
A: It shouldnt, because there is no tick-based code that is executed

Q: Does reasearch-speed stack with multiple labs?
A: Yes research speed does stack just like in vanilla

Q: Is it worth researching Lab-research-speed?
A: Yes

Q: Will this receive updates
A: maybe if you ask nicely

Q: Where are newer versions?
A: https://mods.factorio.com/mod/timed_technology
https://mods.factorio.com/mod/timed_technology_17