Talking extensively about how wonderful your product will be without ever making any promises whatsoever is the work of a bullshit artist.
If you can't keep promises, and don't want to bullshit, then talk more about what the product already does.
If you can't keep promises, and don't want to bullshit, then talk more about what the product already does.
OR
I can have many small sub-features that relate to this major feature done in 2 months, but I might know exactly which features make the cut in those 2 months.
Seems congruous to me