The Panaracer DriverPro will have bigger 2.4 and 2.6 widths in both 27.5 and 29er by Spring 2018.
For now, it’s available in 2.20 widths, providing a small knob, fast rolling tire for general conditions. The 29×2.2 comes in at a claimed 590g, so look for the larger sizes to be reasonably light options when you want more volume.
The PanDura gets a 27.5×2.6, also, joining the existing 2.4.
Think of it as a deeper tread version of their original Dart.
The GravelKing will add a 27.5×1.9 (650Bx48) and 700×38, both with tan sidewalls.
The GravelKing SK (for Semi Knob) will add three new sizes: 700×38, 700×43, and 27.5×1.9 (650Bx48).
IRC is taking one of their cyclocross treads and turning it into a wider version for gravel. Called the Bokken, it’ll come in 700×36 and 700×40. It’s tubeless ready and should be available mid November for $69.99.
Available since summer, the Marbella has this new 27.5×2.25 road plus size. It’s not tubeless ready, though. Check them out at IRC-Tire.com.