Did v5 change so that you automatically search against all indexes by default.
Before I would have to do a "index=custom sourcetype=foo" now I just do a "sourcetype=foo" and it works with out calling out the index. Pretty sure in 4.* the main index was only searched when not specifying a index.
Under the Manager -> Access controls -> Roles (Pick one like admin) you can specify what indexes are searched by default.
I have specifically set mine to "all non-internal indexes" this searches everything by default. Other roles only search the pertinent indexes.
*Edit: To answer your real question, no v5 didn't change. My fresh install still only shows main as the default searched index. I tested build 140868.
Under the Manager -> Access controls -> Roles (Pick one like admin) you can specify what indexes are searched by default.
I have specifically set mine to "all non-internal indexes" this searches everything by default. Other roles only search the pertinent indexes.
*Edit: To answer your real question, no v5 didn't change. My fresh install still only shows main as the default searched index. I tested build 140868.