Via the Steam Store;

Dota Plus

• Adjusted the Hero Level XP and Shard reward curve to make earlier levels more easily attainable, with the total XP to reach Level 25 (and total Shards rewarded) remaining the same. Users' total earned XP for each hero thus far have been remapped to the new level and users were granted any missing shards that they may have missed in the new curve.
• Common relics are now available for direct purchase for 5000 shards each, in addition to the existing random roll option.