Anyone know where Morpheus have taken the source code from for version 3.0 ?

http://start.morpheus.com/m3000/home/home.htm

As long as I can see you can't download the beta....
so how could we tell?

Maybe they have even written their own (!) client...?
Who knows? Maybe it's even not using Gnutella anymore..

Morpheus 3.0 identifies as "Morpheus 3.0 (GnucDNA 0.9.0.8)" or something similar. I forgot the exact user agent string but they are clearly using last year's version of GnucDNA.

i heard they went back to looking like gnucleus. cept the buttons are different.

Nope. They don't look like Gnucleus.

oh ok. ya then i heard wrong. so they have their own look now?

You can download morpheus 3.009 through this magnet links:

magnet:?xt=urn:bitprint:N3VHSZTBQVD522CSAITTLZA3VD MQ6EJE.25E27JE74LAABJJ55KAZY2FSHOCQQIFJQCXCX2Q&dn= Morpheus_3.0.0.9.exe

gnutella://urn:bitprint:N3VHSZTBQVD522CSAITTLZA3VDMQ6EJE.25E2 7JE74LAABJJ55KAZY2FSHOCQQIFJQCXCX2Q/Morpheus_3.0.0.9.exe/

ed2k://|file|Morpheus_3.0.0.9.exe|6053996|c02feb6725807f6 fc014bd2a519bc134|/

download
http://mitglied.lycos.de/efans1/morpheus3.htm

So .... Is this definately Gnucleus or anyone else know what it is based on?

It is definately based on gnucleus, but at the moment it has more features than (the non beta) Gnucleus itself.
Morpheus is using GnucDNA, which is good.

They are fully in their rights for using the DNA, they even support Swabby in developing GnucDNA.