There was 4 CLRV and 4421 on 514 today when I saw it twice, as well roded it once. Even rode one of the 514 CLRV.
The PCC and the Witt will never have GPS on them nor pans
509 is supposed to have 2 Flexity, but common to see one due to Fleet Loop. I expect to see a 2nd 509 once the Ex loop reopens in July. Wouldn't be surprise to see 4422 on 514 next week when it enter service and will be the 2nd car for the line.
Since the ridership is light on 509 and the push for 514, TTC will push as many new cars onto 514 until there is 10 of them late this year. The goal still remain to have 510 100% new cars, then move to 509 after 514 is done and then onto 511. As it been stated, one hand said something one day, then the other say something different a few days later that cause confusion, because the 2 hands don't talk to each other in the first place. Everything is a moving target and take things with a grain of salt until you see it.