Yes ... I was married in the Phils 4 years ago come December 8 and accompanied my wife when she lodged her spousal application the following January 20.
And I remember getting excitedwhen, a few days later, she was sent a text message similar to yours ... and then having my ardour cooled
on discovering it amounted to no more than a standard acknowledgement of receipt.
Turned out to be 41/2 weeks' later before the visa was actually in her hands ... by which time I was back in Blighty, and my good lady ended up flying to Manchester Airport alone.
So, based on my own experience,with what others here have already advised - it's best NOT to book any flights at the present stage to avoid disappointment.