Yes, -ish.Would the new garage enable better service somehow? I’m not entirely familiar with the role they play in the scheme of things.
As NoahB pointed out, it does allow them to more efficiently store and maintain a larger fleet, which is one thing that HSR has been working on over the past several years. They have lots of space at their current garage, but it was only built to maintain a fleet of about 250 vehicles. They're well beyond that now, and that number is only going to grow in the coming years.
The other thing that it gives the transit agency is the ability to shorten deadheads to a from routes. This is where the "-ish" part comes into play - by shortening deadheads, they also shorten the amount of time that the bus and driver are on the road, and thus save costs. It may not be much, but a 15 minute savings each across a fleet of 40 buses in daily service can save enough money to put another bus in service for a shift.
Of course, this does need to be countered with the overhead costs of running and staffing an additional garage. 20+ years ago, the TTC estimated that it cost them $3mil in staffing and overhead for any garage regardless of size - and that cost has only gone up since then.