Official FW 384 is out for AC68U by the way..
ASUS releases its GPL code only very slowly, carefully, rarely. Asuswrt-Merlin firmware is a little behind the official FW. However, version 384 does not bring any news. It's just a great ad. The goal is for users to buy other new ASUS network products and connect them to each other. AiMesh is the big ad. Quickly update everyone! :-D It's really funny.
If you are a network expert, you can set up your FW 380 or FW 382 router to work better than the FW 384 and also in combination with other routers!
I do not know why everybody is always dreaming about a new firmware version. Newer firmware does not mean more stable! In version 384, as it is innovated and new, there are so many unrevealed bugs.
Asuswrt-Merlin adds to the firmware some features that ordinary users need to use. In official firmware, these features are missing - such as the Wireless Survey utility for scanned occupied radio channels. If there was no dd-wrt firmware, the Asuswrt firmware would not include features such as: MultiWAN, VPN, Virtual-WiFi (Guest WiFi), etc. . These features have been taken over (stolen) by Asuswrt firmware from long-popular OpenSource firmware. Still many features in the official Asuswrt are missing. Do you really want version 384?
Why ?
It is necessary to repair version 382 and it will be great!
It's true that ASUS makes it easier to configure the router, but only for ordinary people. From the point of view of network experts, the ASUS router is unusable - in terms of configuration. Why, for example, user scripts are not part of the official Asuswrt firmware, but only Merlin is added to the Asuswrt-Merlin firmware? It's all funny. ASUS tries to restrict users to always ask ASUS for help (requiring new patches, new firmware, new products, support). ASUS produces high quality products, but their software is really funny. Merlin is trying to make a little better firmware from Asuswrt official firmware. It's ridiculous that the ASUS manufacturer does not respond when asked for a GPL code (for example, for ver.384). The whole problem is mainly in the protected Broadcom WiFi driver code.