Full Idea
The tenseless stance is quite clear: all times are equally real, so there are truth-makers for the future-tense statements, which consequently have determinate truth-values.
Gist of Idea
In the tenseless view, all times are equally real, so statements of the future have truth-values
Source
Robin Le Poidevin (Intro to 'Questions of Time and Tense' [1998], Intro)
Book Reference
'Questions of Time and Tense', ed/tr. Le Poidevin,R [OUP 2002], p.2
A Reaction
The tenseless view is linked to the B-series view, and to eternalism. This seems to mean that Aristotle took a tensed A-series view of time.