diff --git a/README.md b/README.md
index 0bcdf8f..cbdd503 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,33 @@
 # iotaFS
 
 A simple script to upload / download files into / from the iota tangle for free! (Well, you pay with POW...)
+
+## main.py
+
+Fully functional poc, but has horrible performance.
+
+
+## next.py
+
+Non yet functional and I'm also no longer working on it.
+Changes compared to main.py:
+ - switched to libfuse3
+ - switched to a async model
+ - switched to object-oriented class-structure
+ - switched to a way more efficient delta & milestone system
+ - appending data to files without a re-upload possible, if file has not been closed
+   (and therefore the last block is still unsealed)
+ - incremental r/w-keypair in directory-structure: mounting point in the fs can be choosen
+   and a single folder (and all contained files / folders ) can be shared with someone else
+   simply by giving them the r/w-keypair and last known milestone-pointer (address) for the folder
+ - sharing a folder in read-only mode by only giving them the r-key and the last known milestone-pointer
+ - did I mention it has 1000x better performance?
+
+Development was stopped, because a iota-snapshot will remove the fs (next AND main) from the tangle and require the data
+to be bought from a fullnode.
+If a transitional grace-period for snaphots gets implemented this could be circumvented by implementing a refresh, which would
+ - make a forced full milestone of the Genesis
+ - rewrite all files
+
+ But until such a thing is implemented I dont see the point in continuing the development on what essentially was only
+ ment to be a poc.
diff --git a/next.py b/next.py
index 8e8a9f8..abd5c9f 100644
--- a/next.py
+++ b/next.py
@@ -18,6 +18,7 @@
 #       Problem: No updateable milestone-index... -> Create share-genesis?
 #       Problem: When sharing a single file, updates are not received... -> new file-blobs reverence old one via rec-address
 # TODO: ? Switch to salsa20 stream-cipher -> no padding required -> 2187 as blocksize instead of 2176 -> .5% more
+# TODO: A write-key alone is pretty stupid: Switch to a rw- and r-key? The r-key would be derived from the rw.
 
 from iota import Iota, ProposedTransaction, Address, TryteString, Tag
 from iota.crypto.addresses import AddressGenerator