I deal in facts, not speculation, so... This is a P25 phase 1 system to be compatible with multiple vendors (a good thing). Since phase 2 has limited vendor availability at this time, and prices are higher, the odds of going to phase 2 on this system at this time are almost zero.
As far as the future of T-band, yes, there are some questions about that, but no one can fully hazard what is going to occur. Technology is changing fast, new interoperability standards are being developed, and the next generation LTE stuff is being rolled out, so who knows.