svn+ syntax may be deprecated but it is still essential

Using the latest bzr.dev (3530, 2008-07-08 00:05:06+01:00) and bzr-svn (1450, 2008-07-08 00:46:41+02:00), I get the following behaviour. Whilst the svn+ is being reported as deprecated and hence by implication not needed, it is in fact essential still:

|> bzr pull
Using saved location: svn+http://scons.tigris.org/svn/scons/branches/core
The svn+ syntax is deprecated, use http://scons.tigris.org/svn/scons/branches/core instead.
using experimental bzr-svn mappings; output may change between revisions
No revisions to pull.
|> bzr pull http://scons.tigris.org/svn/scons/branches/core
bzr: ERROR: Invalid http response for http://scons.tigris.org/svn/scons/branches/core/.bzr/branch-format: Unable to handle http code 401: expected 200 or 404 for full response.
|> bzr pull svn+http://scons.tigris.org/svn/scons/branches/core
The svn+ syntax is deprecated, use http://scons.tigris.org/svn/scons/branches/core instead.
using experimental bzr-svn mappings; output may change between revisions
No revisions to pull.
|>