Just did the test using dialy (jan 23) and the message is still there:

ISO: /scratch/images/ubuntu/daily/vivid-server-ppc64el_2015-01-23.iso
MD5SUM: d9b71a2045b9bf14cd889d1c8ff9f8a7
PRESEED: ext4

Detecting hardware to find CD-ROM drives  ... 95%... 100%
Network interface NamePolicy= disabled on kernel command line, ignoring.
Scanning CD-ROM  ... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%
Loading additional components  ... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%
Detecting network hardware  Network interface NamePolicy= disabled on kernel command line, ignoring.
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'


could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'


could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'

... 95%... 100%
Detecting link on eth0; please wait...  
Waiting for link-local address...  ... 16%... 25%... 33%... 41%... 50%... 100%
Attempting IPv6 autoconfiguration...  ... 16%... 25%... 33%... 41%... 50%... 66%... 75%... 83%... 91%... 100%
Configuring the network with DHCP  ... 100%
Loading additional components  ... 33%... 66%... 100%
Generating SSH host key  
Setting up the clock  ... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 100%
Detecting disks and all other hardware  could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'


could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'

could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
could not open builtin file '/lib/modules/3.18.0-9-generic/modules.builtin.bin'
... 95%... 100%
Loading additional components  ... 16%... 33%... 50%... 66%... 83%... 100%
Starting up the partitioner  ... 13%... 21%... 30%... 43%... 52%... 60%... 73%... 82%... 91%... 100%
Guided partitioning  ... 20%... 40%... 60%... 80%
Partitions formatting  ... 33%
Partitions formatting  
Installing the system...  ... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 83%... 90%... 100%
Configuring apt  ... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%
Select and install software  ... 10%