I've been getting way more 2k eggs since gen2, not just this week.
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Same here, also alot more 10k's
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Sorry that I hogged them all
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The drop rate seems the same to me.
I hatched nine 10K eggs on Monday and by this morning I already picked up 3 more.
Could just be your location. Try different pokestops.
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My location is fine.
I find around a 10km egg every 1-2 days, and in the last week I found more 5km than 2km ones.
Hatched 23 10km eggs in the last ~17 days
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....and here is a friend of mine less than an hour ago.
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Been getting more 2km since they redid the egg hatches, I used to have mainly all 5km, now its usually all 2km, although I have gotten a few more 10km lately too.
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I got a lot more 10 km eggs than usual recently, but 2 km are rare