Based on the recently released Linux 4.19 kernel series, the GNU Linux-libre 4.17-gnu kernel borrows all the new features, including the experimental EROFS (Enhanced Read-Only File System) file system, initial support for the Wi-Fi 6 (802.11ax) wireless protocol, and mitigations for the L1FT and SpectreRSB security flaws.
While the GNU Linux-Libre 4.19 kernel comes with all these goodies found in the upstream Linux 4.19 kernel, it doesn’t ship with proprietary code. Deblobbed drivers include Aspeed ColdFire FSI Master, MT76x0U and MT76x2U Wi-Fi, MTk Bluetooth UART, as well as Keystone and Qualcomm Hexagon Remoteproc.