Mass Cure Wounds
A wave of healing energy washes out from a point you can see within range. Choose up to six creatures in a 30-foot-radius Sphere centered on that point. Each target regains Hit Points equal to 5d8 plus your spellcasting ability modifier.
Using a Higher-Level Spell Slot. The healing increases by 1d8 for each spell slot level above 5.
Mass Cure Wounds 5e 2024 vs. 2014 edition differences
The 2024 version changes the school to abjuration, increases the base healing to 5d8 (from 3d8), and clarifies the point must be "you can see." The higher-level slot increase wording is simplified but mechanically similar. No other significant differences.