Visit the Ruins at Midnight
If everything goes according to plan and our man doesn't burn out or die of exhaustion, we can expect another 2–3 updates by the end of the year. That is, about 2–3 months between updates
You need to finish the petplay with both Mio and Kaede and then visit the shrine
Magic Store
The main storyline updates correspond to versions X.X.5 or X.X.0, so you can skip 0.9.8 and 0.9.9