SRU cycle 2021.07.19 extended through Aug-13

[Kleber Souza]

Due to urgent re-spins on the previous SRU cycle to address CVE-2021-22555
[1] for the ESM kernels and LP#1938013 [2] which affected wireless drivers
causing crashes on bionic/linux and several 4.15 derivatives, the current
SRU cycle is going to be extended by a week with the following new schedule:

> cycle: 19-Jul through 08-Aug (3 weeks)
> ====================================================================
>           14-Jul   Last day for kernel commits for this cycle.
> 19-Jul - 23-Jul   Kernel prep week.
> 26-Jul - 06-Aug   Bug verification & Regression testing.
>           09-Aug   Release to -updates.

cycle: 19-Jul through 15-Aug (4 weeks)
====================================================================
          14-Jul   Last day for kernel commits for this cycle.
19-Jul - 23-Jul   Kernel prep week.
26-Jul - 13-Aug   Bug verification & Regression testing.
          16-Aug   Release to -updates.


With Groovy reaching EOL, the default HWE kernel in Focal is now
5.11-based (backported from Hirsute 21.04). The new versions of the
kernels currently planned to be released with the current cycle are
as follows:

> 
> 
> Kernel Versions
> ====================================================================
> hirsute:
>      linux:               5.11.0-26.28
> focal:
>      linux:               5.4.0-81.91
>      linux-hwe-5.8:       5.8.0-61.68~20.04.1
        linux-hwe-5.11       5.11.0-25.27~20.04.1
> bionic:
>      linux:               4.15.0-152.159
        linux:               4.15.0-154.161


The new schedule for the next SRU cycle is as follows:

> 
> cycle: 09-Aug through 29-Aug (3 weeks)
> ====================================================================
>           04-Aug   Last day for kernel commits for this cycle.
> 09-Aug - 13-Aug   Kernel prep week.
> 16-Aug - 27-Aug   Bug verification & Regression testing.
>           30-Aug   Release to -updates.
> 

cycle: 16-Aug through 05-Sep (3 weeks)
====================================================================
          11-Aug   Last day for kernel commits for this cycle.
16-Aug - 20-Aug   Kernel prep week.
23-Aug - 03-Sep   Bug verification & Regression testing.
          06-Sep   Release to -updates.

The up-to-date SRU cycle dates can also be checked at
https://kernel.ubuntu.com/.

Kleber


[1] https://ubuntu.com/security/CVE-2021-22555
[2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1938013