Has my GPG subkey been uploaded to the keyserver?

I've been trying out the new ECC keys that have been added to GnuPG 2.1.

I created a primary key, then added an ed25519 signing subkey. So I know get this:

➜  ~  gpg2 -K
/Users/jonny/.gnupg/pubring.kbx
-------------------------------
sec   brainpoolP384r1/0x4E8DDC0EDE5D23A6 2015-01-09 [expires: 2016-01-09]
     Key fingerprint = EB55 21A4 5B8D 7310 53A6  E5DE 4E8D DC0E DE5D 23A6
uid                 [ultimate] Jonny Barnes <jonny@jonnybarnes.uk>
ssb   brainpoolP384r1/0xAE4F07A02E2C8780 2015-01-09 brainpoolP384r1 [expires: 2016-01-09]
ssb   ed25519/0xCDE84418F36C7F7B 2015-01-09 ed25519 [expires: 2016-01-09]

Then I ran gpg2 --send-keys 0x4E8DDC0EDE5D23A6, but this is what I see when looking for my key on the keyserver:

pub   384E/DE5D23A6 2015-01-09            
 Fingerprint=EB55 21A4 5B8D 7310 53A6  E5DE 4E8D DC0E DE5D 23A6 

uid Jonny Barnes <jonny@jonnybarnes.uk>
sig  sig3  DE5D23A6 2015-01-09 __________ 2016-01-09 [selfsig]

sub   384e/2E2C8780 2015-01-09            
sig sbind  DE5D23A6 2015-01-09 __________ 2016-01-09 []

It only shows one subkey? Where's my second signing subkey?