be along

Related to be along: get along, bring along

will be along

Is or will be on one's way; is or will be coming. Other modal verbs, such as "should" or "would," can be used instead of "will. John will be along soon. He just had to make another stop on the way home. I thought Janet would be along by now.
See also: will
Farlex Dictionary of Idioms.

be along

Will come, will arrive, as in John said he'd be along in a few minutes, or The doctor's report will be along by the end of the week. This phrase always indicates a future event. [Colloquial; early 1800s]
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • will be along
  • a big head
  • (one's) jollies
  • under the carpet
  • under the rug
  • (one's) John Henry
  • upper hand
  • the upper hand
  • the hang of
  • the hang of (something)