diff --git a/changelog.txt b/changelog.txt
index d1e02b23..70efa878 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -6,6 +6,9 @@ OPENSEADRAGON CHANGELOG
 * Fix for IIPServer-style urls when using DZI (#413)
 * Fix memory leak while destroying the viewer (#421)
 * Added fitBoundsWithConstraints() to the viewport (#423)
+* New combined IIIF TileSource for 1.0 through 2.0 (#441)
+* Allowed TileSources to have dynamic tileSize via source.getTileSize(level) (#441)
+
 
 1.1.1:
 
diff --git a/src/iiiftilesource.js b/src/iiiftilesource.js
index 73deba73..c529870b 100644
--- a/src/iiiftilesource.js
+++ b/src/iiiftilesource.js
@@ -1,6 +1,7 @@
 /*
  * OpenSeadragon - IIIFMultiTileSource
  *
+ * Copyright (C) 2009 CodePlex Foundation
  * Copyright (C) 2010-2013 OpenSeadragon contributors
  *
  * Redistribution and use in source and binary forms, with or without
@@ -42,7 +43,7 @@
  * @extends OpenSeadragon.TileSource
  * @see http://iiif.io/api/image/
  */
-$.IIIFMultiTileSource = function( options ){
+$.IIIFTileSource = function( options ){
 
 
     $.extend( true, this, options );
@@ -107,7 +108,7 @@ $.IIIFMultiTileSource = function( options ){
     $.TileSource.apply( this, [ options ] );
 };
 
-$.extend( $.IIIFMultiTileSource.prototype, $.TileSource.prototype, /** @lends OpenSeadragon.IIIFMultiTileSource.prototype */{
+$.extend( $.IIIFTileSource.prototype, $.TileSource.prototype, /** @lends OpenSeadragon.IIIFTileSource.prototype */{
     /**
      * Determine if the data and/or url imply the image service is supported by
      * this tile source.
@@ -148,7 +149,7 @@ $.extend( $.IIIFMultiTileSource.prototype, $.TileSource.prototype, /** @lends Op
      *
      * @function
      * @param {Object} data - the raw configuration
-     * @example <caption>IIIF 1.1 Info Looks like this (XML syntax is no more)</caption>
+     * @example <caption>IIIF 1.1 Info Looks like this</caption>
      * {
      *   "@context" : "http://library.stanford.edu/iiif/image-api/1.1/context.json",
      *   "@id" : "http://iiif.example.com/prefix/1E34750D-38DB-4825-A38A-B60A345E591C",
@@ -178,6 +179,12 @@ $.extend( $.IIIFMultiTileSource.prototype, $.TileSource.prototype, /** @lends Op
         }
     },
 
+    /**
+     * Return the tileSize for the given level.
+     * @function
+     * @param {Number} level
+    */
+
     getTileSize: function( level ){
         var scaleFactor = Math.pow(2, this.maxLevel - level);
         // cache it in case any external code is going to read it directly
diff --git a/src/tilesource.js b/src/tilesource.js
index bcb553fb..9fc1f7d8 100644
--- a/src/tilesource.js
+++ b/src/tilesource.js
@@ -127,6 +127,8 @@ $.TileSource = function( width, height, tileSize, tileOverlap, minLevel, maxLeve
      */
     /**
      * The size of the image tiles used to compose the image.
+     * Please note that tileSize may be deprecated in a future release. 
+     * Instead the getTileSize(level) function should be used.
      * @member {Number} tileSize
      * @memberof OpenSeadragon.TileSource#
      */
@@ -195,6 +197,10 @@ $.TileSource = function( width, height, tileSize, tileOverlap, minLevel, maxLeve
 $.TileSource.prototype = /** @lends OpenSeadragon.TileSource.prototype */{
 
     /**
+     * Return the tileSize for a given level. 
+     * Subclasses should override this if tileSizes can be different at different levels
+     *   such as in IIIFTileSource.  Code should use this function rather than reading
+     *   from .tileSize directly.  tileSize may be deprecated in a future release.
      * @function
      * @param {Number} level
      */