Next-generation

adj.capable, hopefulprofessional

What it means

More advanced than the current or previous version.

Reach for it when describing a successor technology or design with material advances over the current version

The next-generation battery stores more energy with less waste.

playful
cutting-edge
when position at the current frontier is supportable
not when It is promotional and requires evidence that the design truly leads the field.
playful
future-ready
when preparation for expected needs is the point
not when The marketing phrase is vague unless those future requirements are named.
warm
innovative
when a fresh method matters more than version history
not when Innovation does not prove that a product belongs to the next generation.
professional
advanced
when technical capability matters without a lineage claim
not when Advanced can describe the current model and does not require a successor generation.
professional
new-generation
when direct succession is the main point
not when New-generation identifies a cohort but makes no claim of improvement.
professional
successor
when sequence matters more than improvement
not when A successor can be worse than what it replaces.
professional
upgraded
when an existing product gained specific improvements
not when An upgrade may be incremental rather than a new generation.
formal
state-of-the-art
when best available capability has been independently established
not when The claim is stronger than next-generation and quickly becomes outdated.

next-generation technology
The next-generation technology uses half as much cooling water.
next-generation model
A next-generation model will enter field testing in autumn.
next-generation design
The next-generation design replaces three fragile moving parts.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.